Skiving machine



Jan. 8 1924.

E. J. RAY

SKIVING MACHINE Filed Dec. 12 1922 2 Sheets-Sheet 1 Jan. 8 1924.

E. J. RAY

SKIVING MACHINE 2 Sheets-5heet 2 Filed D90. 12 1922 i5 5,

Patented Jan. 8, 1924.

UNITED STATES PATENT OFFICE.

EUGENE J. BAY, OF BEVERLY, MASSACHUSETTS, ASSIGNDR TO UNITED SHOE MACHIN- ERY CORYORATION, 0F PATERSON, NEW! JERSEY, A CORPORATION OF NEW JERSEY.

SKIVING M ACHINE.

Application filed December 12, 1922.

To all whom it may concern:

Be it known that I, EUGENE J. RAY, a citizen of the United States, residing at Beverly, in the county of Essex and State of Massachusetts, have invented certain 1mprovements in Skiving Machines, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to skiving and splitting machines and is herein illustrated as embodied in a skiving machine of the type which is provided with a rotary cylin drical knife.

bkiving machines having cylindrical knives are commonly provided with a driven feed roll located partly within the knife and adjacent the upper portion thereof and with a co-operating presser located above the feed roll and outside the knife. The presser, which may also be in the form of a roll, is adjustable angularly to vary the inclination of the scarf which will be produoed, the feed roll being mounted for yielding movement both away from the edge of the knife and angularly so as to respond both to the thickness of the work and to the angular position of the presser. This construction and arrangement is satisfactory when ordinary upper leather and similar material is being operated upon but when an attempt is made to operate upon thicker, heavier material, for example upon the casings of automobile tires. a diliirulty is encountered in that the material is nol gripped with suilicient force over a sullirient area to ensure proper feeding.

According to the present invention the presser and the feed roll are both adjustable and are so mounted that they may be adjusted in unison whereby they maintain the same relation to each other in any position to which they may be adjusted. In the illustrative machine the presser and the feed roll are both mounted upon an adjusable bracket, the feed roll being urged toward the presser at all times by a compara tively strong spring. "When it is desired to vary the inclination of the scarf, the bracket is adjusted, and with it the presser and roll are adjusted in unison. Their operative faces are thus always parallel to each other, and uniform and sutlicicnt pressure is at all Serial No. 606,445.

times exerted upon an area of the work sufficient to ensure a steady and adequate feed. Preferably the axis about which the bracket is adjusted is substantially parallel to the direction of feed of the work and passes substantially through that point at one end of the feed roll which, at any given moment, is in position to engage the work. This point, therefore, remains always in the same position with respect to the knife, and no adjustment of the roll bodily toward or from the knife is necessary.

These and other features of the invention including certain details of ci'instruci Hill and combinations of parts will be described as embodied in an illustrative machine and pointed out in the appended claims.

Referring to the aecom 'ianying drawings,

Figure l is a front elevation of one end of a machine in which the present Invention is embodied,

Figure is an end elevation of the. same portion with part of the wall of the swinging head and part of the roll-supporting web broken away, and i Figure 3 is a detail principally in elevation showing more particularly the mounting of the roll.

The general structure of the illustrative machine is or may be like that of the uni.- ehine shown in the patent to Laliam 1,301,283; and before describing the new construction those features which are ihc same or substantially the same as the e irrespending ones of the patented machine will be briefly indicated. The machine comprises a frame or base 7 in which are bearings for a rotary shaft 5) upon the outer end of which a t ylllltll'ltfll knife ll is mounted. Pivoted about a vertical axis (not shown) which is located at the farth r side of the machine as viewed in Fig. 1, 's a head 13 which, in the operative position shown, forms a continuation of the frame or base 7. This head 13 carries among other elements the feed roll 15, the purpose of pivoting the head to the frame in the manner described being to permit the beau to be swung out of the way to give access to the knife as well as to the parts carried by the head. The head is normally held in the operative position illustrated by a latch (not shown) which may be released at anv time by pulling down on a lever 17 pr paratory to swinging the head to one side; and,

when this lever is pulled down, a cam 19 formed upon the roekshatt 21, to whit-i1 one end of the lever is attached, acts upon a tail 23 of the pivoted yoke which carries the feed roll in such manner that the roll is lowered from the adjacent edge of the knife. A Presser foot eo-operates with the feed roll to advertise the work to the knife. llhe knife and feed roll of the machine as well as the knife grinding mechanism {not shown) may be driven in any snitahle manner as for example the manner of the patented machine. No further details oi eonstruction and mounting of the pirts which have been thus far described, except those of the resser foot and feed roll, will be given, reference being made to the patented machine. It will be understood, however, that; the work is fed from left to right. as viewed in Fig. 1, to skire or *to split a piece of sheet material.

In the patented machine the presser mounted at the end ot an arm which is rigid with the liaise oi the *meehine. in the present maehiue the presser is mounted upon an angularly adjustable bracket :27 upon whiih the feed roll is also mounted. the liraeket being carried by the head 13 so that! when this head is swuu g to one side. it arries with it hoth the feed roll and the presner. l ornied on the lel t hand wall oi the head 13, as viewed in Fig. l. are twe segmental rihs 29 to provide a guidewa in whieh is received a segmental guide ill rigid with the ln'aeket 2?. This guide has formed updn it a segmental I'litlt i l-l which meshes with a pinion 235. the eurratnre oi the segmental guide and giiiiieway living such that. when the pinion is rotated hr means til the hzind-lmhil 37. the Market is swung: angular-l aliout a horizon tal axis \\'lll('l1 passes through a point ll) in the upper rigid-hand edge of the feed t' as \ie'wed in Fig. lhe rar'k and pinion are held in mesh h a serew ll the stein ol' whieh psn'sis through an arruate slot ill in the ront wall of the head ill and is threaded intoi'he guide :1 In the position o'i' parts shown the lirneirgei it? is in its extreme upper position. in order to adjust it, the hand hold 54- on the outer end of the serew 4-1 is turned to loosen the screw. and then the hand-hold li' is turned to adjust the liraeket.

As has lieen ex ilained aliore. the teed roll i5 is married by the bracket 27 and istherefore adjusted angnlarly with the resser. llxtending {mm the lower right hand pen tion of the liraehe '27. as viewed in Fig. 2, is a projeetien or weh 127 having in its upper portion a bass threaded to reeeire a set screw in which determines. in a manner presently to he described. "the normal position of the teed roll by limiting the extent. of angular movement imparted to the roll by the roll-supporting: spring. Extending at right angles to the web l2? is a second web 22? (Fig. 1) haring: a iierizma mll yextendin g; hoss 321' and 2 depending vertically exleniling soeket i227. Through a bearing in the horizontally extending boss 32? extends a. reek shaft 4" to which is fast the yoke which carries the feed roll. said yoke having. as has been explained. ahore, the depending tail 2%. Thi yoke i-oniprises bosses 5'1, 53 with the "ior'nier of which the tail is integral, said bosses hiring pinned to the reekshatt i? and having upstanding lugs 5? to which are fastened by screws 59, G1 the arms 63. 65 of the y ke, the feed roll 15 being last to a shaft 6? harin'g hearings in the arms of the yoke, which shaft is driven as in the machine of the 'Latliain patent. Located in the vertically depending socket 4-27 is a coiled spring 69 which. at its lower end, rests upon the ti ifler end of a tensionvaryi'ng screw "I .l threaded into the lower end of the socket. The upper end of the spring "rests against the under side of a portion of the yoke which carries the teed roll and tends at all times to swing the roll upwart'lly ahou t the axis 0*! the rock-shaft 47. the extent of this upward movement-and wristuently the normal position of the. rolln ing determined by the position of the si'ie'w l5, Enentioned ahovr. the end of which emitat'ts with another portion of the feed roll carrying yoke. this last named portion being a bar 73 (Fig. 3) which connects the lugs 57 by which the arms of the feed roll yoke are carried. l he serew i5 is provided with a handheld "i4. h v Wli'it'li it may he adjusttal. and with a look-nut 75 by which it may he held in adjusted position. The spring 69 tends at all times to urge the feed roll toward the Presser. the limit o? its movement in that dirertion living limited by the stop-serew 45. As soon as a. pieee of work enters he! ween the roll and presser. the roll is tort-ed downwardly. and. during; the skivingg' operat ion the work is tiini'iy gripped and ted. The tonralrttctMu and arrangement oi the parts is siieh that the werkengaefifig' surt'ai-es o'i the pa l-est r and roll are Hlll3Rilintially parallel: and. sinee these twomemhers are carried by the same liraiket. this sui stantinlly parallel relation is maintained at all times.

Having thus described my invention. what I claim as he and desire to secure by Letters larent of the United States. is:

l. A machine of the elass described having, in combination a knife and means for engagingand advancing: to the knilea piece 0t work. said meansincluding: a pair of feed Inemhers arranged to engage the work one on each side thereolla carrier for said members. and means whereby the earriei' may he adjusted angnlarly in a path the plane of which is at an angle to the direction ol teed movement of the work.

2. A maehine ot' the class described having, in combination, a knife, means for operating the knife. a pair of feed members for engaging the work one on each side thereof and advancing it to the knife, said members being angularly adjustable, and connections between the members such that they are adjusted in unison.

3. A machine of the class described having, in combination, a knife, means for operating the knife, a pair of feed members for engaging the work one on each side thereof and advancing it to the knife, said members being angulariy adjustable, and connections between the members such that their relative position with respect to each other remains unchanged.

A machine of the class described having, in combination, a knife, means for operating the knife. a pair of feed members for engaging the work one on each side thereof and advancing it to the knife, said members being angularly adjustable in a path the plane of which is at right angles to the direction of feed movement of the work.

5. A machine of the class described having, in combination, a knife, means for operating the knife, a presser and a feed roll located one above the other and arranged to engage respectively the upper and the lower side of the work, and a carrier upon which the presser and feed roll are mounted, said carrier being angularly adjustable about an axis which is substantially parallel to the direction of feed movement of the work.

6. A machine of the class described having, in combination, a knife, means for operating the knife, 9. presser and a feed roll located one above the other and arranged to engage respectively the upper and the lower side of the work, and a carrier upon which the presser and feed roll are mounted, said carrier being angularly adjustable about an axis which is substantially parallel to the direction of feed movement of the work and passes substantially through a point at one end of the roll and close to the edge of the knife.

7. A machine of the class described having, in combination, a cylindrical knife, means for rotating the knife, 3. feed roll located partly Within the knife and close to the upper portion of the edge thereof, a presser located outside the knife above the feed roll, a carrier upon which the feed roll and presser are mounted. and means whereby the carrier may be adjusted angularly about an axis which is substantially parallel to the direction of feed movement of the Work.

8. A machine of the class described having, in combination, a knife, a presser, a feed roll, a bracket upon which both the presscr and feed roll are mounted, a carrier for the roll, a spring acting between the bracket and the roll carrier to urge the roll toward the presser, and means whereby the bracket may be adjusted angular-1y.

9. A machine of the class described having, in combination, a knife, a presser, a feed roll, a bracket upon which both the presser and feed roll are mounted, a carrier for the roll, a spring acting between the bracket and the roll carrier to urge the roll toward the presser, and means whereby the bracket may be adjusted angularly about an axis which is approximately parallel to the direction of feed of the work and passes substantially through a point at one end of the roll which, at any given moment, is in position to engage the work.

10. A machine of the class described having, in combination, a frame, a rotary shaft carried thereby, a knife mounted on the shaft, 2. head capable of swinging away from the frame, a bracket carried by the head, and a presser and feed roll carried by the bracket.

11. A machine of the class described having, in combination, a frame, a rotary shaft carried thereby, a cylindrical knife mounted on the shaft, a head capable of swinging away from the frame, an adjustable bracket carried by the head, and a presser and feed roll carried by the bracket.

12. A machine of the class described having, in combination, a knife, means for engaging and advancing to the knife :1 piece of work, said means including a pair of feed members arranged to engage the work one on each side thereof, a carrier for said members, means connected with one of said members for driving it, and means whereby the carrier may be adjusted angularly in a path the plane of which is at an angle to the direction of feed movement of the work while maintaining the driving connection operative.

13. A machine of the class described having, in combination, a cylindrical knife, means for rotating the knife, :1 presser and a feed roll located one above the other and arranged to engage respectively the upper and lower side of the work, means connected with the roll for driving it, and a carrier upon which the presser and feed roll are mounted, said carrier being angularly adj ustable about an axis which is substantially parallel to the direction of feed movement of the Work while maintaining the driving connection operative.

In testimony whereof I have signed my name to this specification.

EUGENE J. RAY.

DJSOLAIMER.

1,479,832-Eugene J. Roy, Beverly, 1W ass. Smvmo 1W ACHINE. Patent dated January 8, 1924. Disclaimer filed March 27, 1926, by the assignee, United Shoe Machinery Corporation.

Hereby enters this disclaimer to said claims 1. Q, 3, 4, 5, 6, and 12 of said Letters Patent, which are in the following words, to wit:

1. A machine of the class described having, in combination a knife and means for engaging and advancing to the knife a piece of work, said means including a pair of feed members arranged to engage the work one. on each side thereof. a carrier for said members, and means whereby the carrier may be adjusted angularly in a path the plane of which is at an angle to the direction of feed movement of the work.

2. A machine of the class described having, in combination, a knife, means for operating the knife, a pair of feed members for engaging the work one on each side thereof and advancing it to the knife. said members being angularly adjustable, and connections between the members such that they are adjusted in unison.

3. A machine of the class described having. in combination, a knife, means for operating the knife, a pair of feed members for engaging the work one on each side thereof and advancing it to the knife, said members being angularly adjustable. and connections between the members such that their relative position with respect to each other remains unchanged.

4. A machine of the class described having, in combination, a knife, means for operating the knife, a pair of feed members for engaging the work one on each side thereof and advancing it to the knife, said members being angularly adjustable in a path the plane of which is at right angles to the direction of feed movement of the work.

5. A machine of the class described having. in combination, a knife, means for operatin the knife, a presser and a feed roll located one above the other and arranged to engage respectively the upper and the lower side of the work, and a carrier upon which the presser and feed roll are mounted, said carrier being angularly adjustable about an axis which is substantially parallel to the direction of feed movement of the work.

6. A machine of the class described havin in combination, a knife, means for operating the knife, a presser and a feed roll located one above the other and arrangedto engage respectively the upper and the lower side of the work, and a carrier upon which the presser and feed roll are mounted, said carrier being angularly adjustable about an axis which is substantially parallel to the direction of feed movement of the work and passes substantially through a point at one end of the roll and close to the edge of the knife.

12. A machine of the class described having. in combination, a knife, means for engaging and advancing to the knife a piece of work, said means including a pair of feed members arranged to engage the work one. on each side thereof, a carrier for said members, means connected with one of said members for driving it, and means whereby the carrier may be adjusted angular-iv in a path the plane of which is at an angle to the direction of feed movement of the work While maintaining the driving connection operative.

[Official Gazette April 15, 19%.] 

